Comparison

GPT-6.1 Sol vs Jev

People have published 44 builds with GPT-6.1 Sol and 180 with Jev, overlapping in 8 use cases. Jev has more coding, productivity, games.

Successor to GPT-6 Sol, announced at OpenAI DevDay on 2026-09-29 with near-Astra intelligence for a fifth of the price: $2 input and $10 output per million tokens, a 1.05M-token context window and five reasoning levels. Rolled out in ChatGPT Work, Codex and the API.

44
Entries: 42
Creators: GitHub, YouTube, X
Top source

Jev is TypeSafe AI's first public System One decision model: it answers closed questions (labels, yes/no, scores, choices) with structured output in milliseconds for a fraction of a cent, rather than generating prose.

180
Entries: 164
Creators: X, GitHub, Web
Top source

Same use case, side by side

Use caseGPT-6.1 SolJev

Coding

GPT-6.1 Sol · 15 entriesGPT-6.1 Sol Is So Weird

Jev · 29 entrieslaya: Non-autoregressive System 1 decision engine. Typed choice, score and y

Productivity

GPT-6.1 Sol · 1 entryWindows ChatGPT navigation rail built with Sol

Jev · 35 entriesSmart copy and paste that decides what to paste

Games

GPT-6.1 Sol · 9 entriesCan GPT-6.1 Sol create a scary third-person horror game?

Jev · 24 entriesJev plays Doom

Agents

GPT-6.1 Sol · 4 entriesCodex skill: Sol leads and delegates to Sol or Astra

Jev · 23 entriesFlight search with Browser Use

Content

GPT-6.1 Sol · 1 entryWriting benchmark: every Sol effort setting ranked

Jev · 21 entries724 competitor ads, broken down

Research

GPT-6.1 Sol · 4 entriesArtificial Analysis on X: Sol replaces GPT-6 Sol after seven days

Jev · 13 entriesJev-guided sparse attention speeds up MiniMax H3 video generation

Design

GPT-6.1 Sol · 3 entriesChronograph: Anime.js 3D scroll demo

Jev · 3 entriesA text box that turns into whatever UI you type

Education

GPT-6.1 Sol · 1 entryShutterLab: pinhole and fisheye camera physics study

Jev · 3 entriesReadwithjev: live emotion highlighting while you read

Top builds with GPT-6.1 Sol

1
GPT-6.1 Sol Is So Weirdon YouTube:Can It Code?· 94.3K views94.3K views
2
Artificial Analysis on X: Sol replaces GPT-6 Sol after seven dayson X:Artificial Analysis· 2K likes2K likes
3
GPT 6.1 Sol or Opus 5.5? One Got Gappedon YouTube:Can It Code?· 41.7K views41.7K views
4
I Tested NEW GPT-6.1 Sol on Coding. I'm Shocked.on YouTube:AI Coding Daily· 27.1K views27.1K views
5
GPT-6.1 Sol builds the same 3D scene at every effort levelon YouTube:Code Bear· 24.6K views24.6K views

Top builds with Jev

1
NandhaKishorM/laya
laya: Non-autoregressive System 1 decision engine. Typed choice, score and yon GitHub:NandhaKishorM· 31.4K stars31.4K stars
2
jev-ultrafast: Fastest and cheapest web agenton GitHub:browser-use· 22.3K stars22.3K stars
3
kev: Jev-like family of decision models built on top of Qwen3.5/3.8 you canon GitHub:jaredpalmer· 8.6K stars8.6K stars
4
jev-chat-jarvis: The chat decision assistant: before you reply, Jev reads the chat, judon GitHub:jev-chat· 7.4K stars7.4K stars
5
fast-jev-compaction: Claude Code plugin that replaces the compaction summary with Jev…on GitHub:tamaratran· 7.5K stars7.5K stars